Abstract

With the rapid development of the power industry coal-fired power plants in China have been built more than decades ago. Boiler system is a complex process and has high nonlinearity, large delay, strong coupling and load disturbance. It is crucial parts of most power plants and has been concerned with analyzing power system dynamics in various works. But it is hard to develop practical mathematical model of the control object using the traditional PID control. In order to realize the optimal control of boiler combustion system, this paper presents the fuzzy-PID control Strategy applied in steam temperature control. Simulation results for different cases of boiler combustion system show that the control strategy has better ability.

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